/*
 * Copyright (C) 2005 Luca Veltri - University of Parma - Italy
 * 
 * This file is part of MjSip (http://www.mjsip.org)
 * 
 * MjSip is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * MjSip is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with MjSip; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * 
 * Author(s):
 * Luca Veltri (luca.veltri@unipr.it)
 */

package org.zoolu.sip.call;


import org.zoolu.sip.provider.*;
import org.zoolu.sip.address.NameAddress;
import org.zoolu.sip.message.*;


/** CallWatcher listens for new incoming invite requests that create an Call.
  */
public class CallWatcher implements SipProviderListener
{  
   /** CallWatcherListener that captures new calls. */
   CallWatcherListener listener;

   /** SipProvider that receives incoming invite requests. */
   SipProvider sip_provider;

   /** Contact address. */
   //NameAddress contact_naddr;

   /** Contact address. */
   //NameAddress secure_contact_naddr;

	/**
	 * Creates a new CallWatcher of type <i>method</i>, and starts listening for
	 * incoming invite requests.
	 */
	public CallWatcher(SipProvider sip_provider, /* String user, */CallWatcherListener listener) {
		this.listener = listener;
		this.sip_provider = sip_provider;
		// this.contact_naddr=new
		// NameAddress(sip_provider.getContactAddress(user));
		// this.secure_contact_naddr=new
		// NameAddress(sip_provider.getSecureContactAddress(user));
		sip_provider.addSelectiveListener(new MethodId(SipMethods.INVITE), this);
	}

	/** Method derived from interface SipListener. */
	public void onReceivedMessage(SipProvider provider, Message msg) {
		if (msg.isRequest() && msg.isInvite()) {
			NameAddress callee = msg.getToHeader().getNameAddress();
			NameAddress caller = msg.getFromHeader().getNameAddress();
			String sdp = msg.getBody();
			if (listener != null)
				listener.onNewIncomingCall(this, new ExtendedCall(sip_provider, msg, listener), callee, caller, sdp,
						msg);
		}
	}

	/** Stops listening for incoming invite requests. */
	public void halt() {
		sip_provider.removeSelectiveListener(new MethodId(SipMethods.INVITE));
	}

}
